[consulting] Copy Protection/DRM approach

[lapurd at gmail.com]

Nobody is disagree that it is possible to make access "more 
controllable" but original requirements described in email that start 
this thread is state:
"... prevent getting the content out of the site in any way. He wants to 
disable copy/paste, printing, screenshots, etc.".

And that requirement is "silly".
As it was explained before in this thread, it is possible with 
combination to restrict access to content and make it hard to retrieve 
"through some of back doors":

    * it is possible to disable copy/paste right from web page but not
      from source code of the page;
    * it is also possible to make content to be visible only in real
      browser and make it not retrievable for web site mirroring software;
    * it is possible to make browser do not use disk cache and therefore
      make it impossible to retrieve content from browser cache folder;
    * may be even in some browsers it is possible to disable printing
      right from that web page.

But without violating/hacking into user computer it is impossible to 
disable operating system ability to take a screenshot.
So, point is that statement like "prevent getting the content out of the 
site in any way" make an original requirements "silly".
Of course, it should be explain to client in most polite way.
Problem is that some times some of the clients firmly believes that they 
are know what they talking about. And in this case it is not easy 
situation when you'll try to point them out to they own mistake.


Sami Khan wrote:
> On Sun, 2009-10-11 at 20:59 -0400, Jeff Greenberg wrote:
>   
>> As far as I can see, the original copyrighted material, print matter,
>> is 
>> still available in print matter, and people can still run to a copy 
>> machine and make a copy of it, beyond fair use, if they want to.
>> There 
>> is no way to completely prevent any copyright infringement other than 
>> (a) don't make the material available, or (b) police it.
>>
>> It's like not wanting dings on your car. That's fine. It's your car.
>> You 
>> worked hard for it. No one should have the right to ding it. So you
>> can 
>> post armed guards around it at the supermarket, not drive it, or
>> accept 
>> that if you put it out there, it might get dinged.
>>     
>
>
> I agree with that sentiment, that they can, the point that I was trying
> to make is that it is too make it harder to do. If you have to look at
> the source code of a document, then take a json string and convert it to
> text, you might be less inclined to copy it and pass it on to a friend
> that has not paid the dues, then if you can just print it to a PDF and
> e-mail it. The same with photocopying, I have a number of books that I
> may lend to a friend, but I have yet to photocopy an entire book and
> pass it on. Though I do know it happens, but it does not happen often
> enough that the profits are overly affected, else the publishers
> wouldn't be making the sort of profits to stay in business.
>
> Regards,
> Sami
>
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